public void Deserialize(Stream input)
{
var baseOffset = input.Position;
var magic = input.ReadValueU32(Endian.Little);
if (magic != Signature && magic.Swap() != Signature)
{
throw new FormatException("not a peg file");
}
var endian = magic == Signature ? Endian.Little : Endian.Big;
var version = input.ReadValueU16(endian);
if (version != 10)
{
throw new FormatException("unsupported peg version");
}
var platform = input.ReadValueU16(endian);
if (Enum.IsDefined(typeof(Platform), platform) == false)
{
throw new FormatException("unsupported peg platform");
}
var headerSize = input.ReadValueU32(endian);
if (baseOffset + headerSize > input.Length)
{
throw new EndOfStreamException();
}
var dataSize = input.ReadValueU32(endian);
var textureCount = input.ReadValueU16(endian);
var unknown12 = input.ReadValueU16(endian);
var frameCount = input.ReadValueU16(endian);
var unknown16 = input.ReadValueU8();
var unknown17 = input.ReadValueU8();
if (unknown12 != 0 ||
unknown16 != 16 ||
unknown17 != 0)
{
throw new FormatException("unexpected unknown values");
}
var textures = new Peg.Texture <Peg.FrameV10> [textureCount];
int totalFrames = 0;
for (int i = 0; i < textures.Length; i++)
{
textures[i] = new Peg.Texture <Peg.FrameV10>();
var frame = new Peg.FrameV10();
frame.Deserialize(input, endian);
textures[i].Frames.Add(frame);
totalFrames++;
/* some pegs in SR2 seem to have been saved incorrectly?
* or there is some sort of flag to mark that data is in
* the same file as the header
*
* see:
* ige_regular.peg_pc
* ige_small.peg_pc
* ige_smallest.peg_pc */
/*
* if (i == 0 &&
* frame.DataOffset != 0)
* {
* throw new FormatException("strange data offset");
* }
*/
if (frame.FrameCount == 0)
{
throw new FormatException("frame count is 0");
}
for (int j = 1; j < frame.FrameCount; j++)
{
var extraFrame = new Peg.FrameV10();
extraFrame.Deserialize(input, endian);
if (extraFrame.FrameCount != 1)
{
throw new FormatException("frame count is not 1");
}
textures[i].Frames.Add(extraFrame);
totalFrames++;
}
}
if (totalFrames != frameCount)
{
throw new FormatException("did not read correct amount of frames");
}
foreach (var texture in textures)
{
texture.Name = input.ReadStringZ(Encoding.ASCII);
}
this._Endian = endian;
this._Version = version;
this._Platform = (Platform)platform;
this._DataSize = dataSize;
this._Textures.Clear();
this._Textures.AddRange(textures);
}
public void Deserialize(Stream input)
{
var baseOffset = input.Position;
var magic = input.ReadValueU32(Endian.Little);
if (magic != Signature && magic.Swap() != Signature)
{
throw new FormatException("not a peg file");
}
var endian = magic == Signature ? Endian.Little : Endian.Big;
var version = input.ReadValueU16(endian);
if (version != 8)
{
throw new FormatException("unsupported peg version");
}
var platform = input.ReadValueU16(endian);
if (Enum.IsDefined(typeof(Platform), platform) == false)
{
throw new FormatException("unsupported peg platform");
}
var headerSize = input.ReadValueU32(endian);
if (baseOffset + headerSize > input.Length)
{
throw new EndOfStreamException();
}
var textureCount = input.ReadValueU16(endian);
var unknown12 = input.ReadValueU16(endian);
var frameCount = input.ReadValueU16(endian);
var unknown16 = input.ReadValueU8();
var unknown17 = input.ReadValueU8();
if (unknown12 != 0 ||
unknown16 != 0 ||
unknown17 != 16)
{
throw new FormatException("unexpected unknown values");
}
var textures = new Peg.Texture <Peg.FrameV8> [textureCount];
int totalFrames = 0;
for (int i = 0; i < textures.Length; i++)
{
textures[i] = new Peg.Texture <Peg.FrameV8>();
var frame = new Peg.FrameV8();
frame.Deserialize(input, endian);
textures[i].Frames.Add(frame);
totalFrames++;
if (frame.FrameCount == 0)
{
throw new FormatException("frame count is 0");
}
for (int j = 1; j < frame.FrameCount; j++)
{
var extraFrame = new Peg.FrameV8();
extraFrame.Deserialize(input, endian);
if (extraFrame.FrameCount != 1)
{
throw new FormatException("frame count is not 1");
}
textures[i].Frames.Add(extraFrame);
totalFrames++;
}
}
if (totalFrames != frameCount)
{
throw new FormatException("did not read correct amount of frames");
}
foreach (var texture in textures)
{
texture.Name = input.ReadStringZ(Encoding.ASCII);
}
this._Endian = endian;
this._Version = version;
this._Platform = (Platform)platform;
this._DataSize = input.ReadValueU32(endian);
this._Textures.Clear();
this._Textures.AddRange(textures);
}